<template>
    <div class="login-container">
        <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" class="login-form" autocomplete="on"
                 label-position="left">
            <div class="title-container">
                <h3 class="title">
                    系统登录界面
                </h3>
            </div>
            <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user"/>
        </span>
                <el-input
                    ref="usernameRef"
                    v-model="loginForm.username"
                    placeholder="用户名"
                    name="username"
                    type="text"
                    tabindex="1"
                    autocomplete="on"/>
            </el-form-item>
            <el-tooltip v-model="capsTooltip" content="Caps lock is On" placement="right" manual>
                <el-form-item prop="password">
                   <span class="svg-container">
                    <svg-icon icon-class="password"/>
                   </span>
                            <el-input
                                :key="passwordType"
                                ref="passwordRef"
                                v-model="loginForm.password"
                                :type="passwordType"
                                placeholder="登录密码"
                                name="password"
                                tabindex="2"
                                autocomplete="on"
                                @keyup.native="checkCapslock"
                                @blur="capsTooltip = false"
                                @keyup.enter.native="handleLogin"/>
                    <span class="show-pwd" @click="showPwd">
                        <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"/>
                    </span>
                </el-form-item>
            </el-tooltip>
            <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;"
                       @click.native.prevent="handleLogin">
                登录
            </el-button>
        </el-form>
    </div>
</template>

<script lang="ts">
import {validUsername} from '@/utils/validate'
import {defineComponent, nextTick, onMounted, reactive, ref, toRefs, watch} from "vue";
import {useRoute, useRouter} from "vue-router";
import {useStore} from "vuex";


export default defineComponent({
    name: 'Login',
    setup() {
        const validateUsername = (rule, value, callback) => {
            if (!validUsername(value)) {
                callback(new Error(('请输入正确的用户名')))
            } else {
                callback()
            }
        }
        const validatePassword = (rule, value, callback) => {
            if (value.length < 6) {
                callback(new Error('密码位数不能小于6位'))
            } else {
                callback()
            }
        }

        const route = useRoute()
        const router = useRouter()
        const store = useStore()
        const usernameRef = ref(null)
        const passwordRef = ref(null)
        const loginFormRef = ref(null)
        const loginForm = reactive({
            username: 'admin',
            password: '111111'
        })
        const loginRules = reactive({
            username: [{required: true, trigger: 'blur', validator: validateUsername}],
            password: [{required: true, trigger: 'blur', validator: validatePassword}]
        })
        const state = reactive({
            passwordType: 'password',
            capsTooltip: false,
            loading: false,
            showDialog: false,
            redirect: undefined,
            otherQuery: {}
        })


        const checkCapslock = (e) => {
            const {key} = e
            state.capsTooltip = key && key.length === 1 && (key >= 'A' && key <= 'Z')
        }
        const showPwd = () => {
            if (state.passwordType === 'password') {
                state.passwordType = ''
            } else {
                state.passwordType = 'password'
            }
            nextTick(() => {
                passwordRef.value.focus()
            })
        }

        const handleLogin = () => {
            loginFormRef.value.validate(valid => {
                if (valid) {
                    // state.loading = true
                    // store.dispatch('/user/login', loginForm).then(() => {
                    //     router.push({path: state.redirect || '/', query: state.otherQuery})
                    //     state.loading = false
                    // }).catch(() => {
                    //     state.loading = false
                    // })
                    router.push({path: state.redirect || '/', query: state.otherQuery})
                } else {
                    console.log('error submit!!')
                    return false
                }
            })
        }
        const getOtherQuery = (query) => {
            return Object.keys(query).reduce((acc, cur) => {
                if (cur !== 'redirect') {
                    acc[cur] = query[cur]
                }
                return acc
            }, {})
        }
        onMounted(() => {
            if (loginForm.username === '') {
                usernameRef.value.focus()
            } else if (loginForm.password === '') {
                passwordRef.value.focus()
            }
        })
        watch(route, (route) => {
            const query = route.query
            if (query) {
                state.redirect = query.redirect
                state.otherQuery = getOtherQuery(query)
            }
        }, {immediate: true})
        return {
            loginForm,
            loginRules,
            usernameRef,
            passwordRef,
            loginFormRef,
            ...toRefs(state),
            checkCapslock,
            showPwd,
            handleLogin
        }
    }
})

</script>

<style lang="scss">

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
        color: $cursor;
    }
}

/* reset element-ui css */
.login-container {
    .el-input {
        display: inline-block;
        height: 47px;
        width: 85%;

        input {
            background: transparent;
            border: 0px;
            -webkit-appearance: none;
            border-radius: 0px;
            padding: 12px 5px 12px 15px;
            color: $light_gray;
            height: 47px;
            caret-color: $cursor;

            &:-webkit-autofill {
                box-shadow: 0 0 0px 1000px $bg inset !important;
                -webkit-text-fill-color: $cursor !important;
            }
        }
    }

    .el-form-item {
        border: 1px solid rgba(255, 255, 255, 0.1);
        background: rgba(0, 0, 0, 0.1);
        border-radius: 5px;
        color: #454545;
    }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
    min-height: 100%;
    width: 100%;
    background-color: $bg;
    overflow: hidden;

    .login-form {
        position: relative;
        width: 520px;
        max-width: 100%;
        padding: 160px 35px 0;
        margin: 0 auto;
        overflow: hidden;
    }

    .tips {
        font-size: 14px;
        color: #fff;
        margin-bottom: 10px;

        span {
            &:first-of-type {
                margin-right: 16px;
            }
        }
    }

    .svg-container {
        padding: 6px 5px 6px 15px;
        color: $dark_gray;
        vertical-align: middle;
        width: 30px;
        display: inline-block;
    }

    .title-container {
        position: relative;

        .title {
            font-size: 26px;
            color: $light_gray;
            margin: 0px auto 40px auto;
            text-align: center;
            font-weight: bold;
        }

        .set-language {
            color: #fff;
            position: absolute;
            top: 3px;
            font-size: 18px;
            right: 0px;
            cursor: pointer;
        }
    }

    .show-pwd {
        position: absolute;
        right: 10px;
        top: 7px;
        font-size: 16px;
        color: $dark_gray;
        cursor: pointer;
        user-select: none;
    }

    .thirdparty-button {
        position: absolute;
        right: 0;
        bottom: 6px;
    }

    @media only screen and (max-width: 470px) {
        .thirdparty-button {
            display: none;
        }
    }
}
</style>
